Efficient location of mobile radiotelephones using cellular and GPS information
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United States of America Patent
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Oct 5, 2004
Grant Date -
Aug 1, 2002
app pub date -
Jan 31, 2001
filing date -
Jan 31, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
The invention specifies various methods for the provision or calculation of a reference location for GPS-equipped mobile communications devices, specifically, GPS-equipped cellular phones. This is accomplished by providing certain GPS-related information over the cellular network, and by calculating reference locations based on various criteria, aided by actual position fixes provided by the built-in GPS receiver.
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